docs: def heightmap_get_minmax(hm: np.ndarray) -> Tuple[float, float]:
      """Return the min and max values of this heightmap.
  
      Args:
          hm (numpy.ndarray): A numpy.ndarray formatted for heightmap functions.
  
      Returns:
          Tuple[float, float]: The (min, max) values.
  
      .. deprecated:: 2.0
          Use ``hm.min()`` or ``hm.max()`` instead.
      """
      mi = ffi.new("float *")
      ma = ffi.new("float *")
      lib.TCOD_heightmap_get_minmax(_heightmap_cdata(hm), mi, ma)
      return mi[0], ma[0]